A couple of years ago Jerry Jones took a linebacker that he knew wouldn't play that year. I guess if you are convinced Tua is that good and you can get him you might be willing to do that. IDK, though, NFL is such a QB centric league.
That's exactly why QBs are over drafted and go for such a premium in the draft and free agency. If you're the Dolphins with the #3 pick, what does it matter if you draft a pro bowl WR or lineman if Ryan Fitzpatrick is your QB? They, and several other teams drafting in the top 10, need a pro bowl QB to change the direction of their franchise. Right now, here are the teams that could potentially draft Tua in the top 10 that have a need at QB. This does not include other teams who could potentially trade up:
3. Dolphins (self-explanatory)
5. Detroit (aging Stafford)
8. Jacksonville (Foles - not a long term solution)
9. LA Chargers (aging Rivers)
10. Denver (self-explanatory)
For example, just look at the past 5 first round picks by the Dolphins:
2019 #13 overall DL Christian Wilkins
2018 #11 overall CB/S Minkah Fitzpatrick (traded)
2017 #22 overall OLB Charles Harris
2016 #13 overall T Laremy Tunsil (traded)
2015 #14 overall WR DaVante Parker
That's a solid group of players and because they don't have a QB they're picking in the top 3 this year. JMO, but I think they go for Tua with the #3 pick if he comes out..